DE3477289D1 - Digital data recording and reproducing devices - Google Patents

Digital data recording and reproducing devices

Info

Publication number
DE3477289D1
DE3477289D1 DE8484306102T DE3477289T DE3477289D1 DE 3477289 D1 DE3477289 D1 DE 3477289D1 DE 8484306102 T DE8484306102 T DE 8484306102T DE 3477289 T DE3477289 T DE 3477289T DE 3477289 D1 DE3477289 D1 DE 3477289D1
Authority
DE
Germany
Prior art keywords
error
bits
digital data
data
data recording
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE8484306102T
Other languages
German (de)
Inventor
Tetsuro C O Sony Corporat Suma
Takao C O Sony Corporation Abe
Tetsuo C O Sony Corporat Ogawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Application granted granted Critical
Publication of DE3477289D1 publication Critical patent/DE3477289D1/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/1808—Driving of both record carrier and head
    • G11B15/1875—Driving of both record carrier and head adaptations for special effects or editing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1806—Pulse code modulation systems for audio signals
    • G11B20/1809—Pulse code modulation systems for audio signals by interleaving
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • G11B20/1876—Interpolating methods
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/35—Unequal or adaptive error protection, e.g. by providing a different level of protection according to significance of source information or by adapting the coding according to the change of transmission channel characteristics
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/93—Regeneration of the television signal or of selected parts thereof
    • H04N5/94—Signal drop-out compensation
    • H04N5/945—Signal drop-out compensation for signals recorded by pulse code modulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Probability & Statistics with Applications (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Facsimile Image Signal Circuits (AREA)

Abstract

In a digital data recording and reproducing device, an operation of error detection is perlormed by circuits (51, 52) with respect to data with weighting provided with a code word dissolution of M bits in upper m1 bits of the most significant bit side of great weighting and lower m2 bits of the least significant side of small weighting. Error concealment (53) is carried out for each of these error detections. When reproducing data at a different tape speed from that at the time of recording, the operation of the circuit (52) for detecting an error in lower m2 bits is inhibited, and the reference of judgement of an error in the data is altered.
DE8484306102T 1983-09-08 1984-09-06 Digital data recording and reproducing devices Expired DE3477289D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58165677A JPS6057574A (en) 1983-09-08 1983-09-08 Signal processor

Publications (1)

Publication Number Publication Date
DE3477289D1 true DE3477289D1 (en) 1989-04-20

Family

ID=15816934

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8484306102T Expired DE3477289D1 (en) 1983-09-08 1984-09-06 Digital data recording and reproducing devices

Country Status (7)

Country Link
US (1) US4680763A (en)
EP (1) EP0137721B1 (en)
JP (1) JPS6057574A (en)
AT (1) ATE41545T1 (en)
AU (1) AU573618B2 (en)
CA (1) CA1252885A (en)
DE (1) DE3477289D1 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU597576B2 (en) 1985-05-21 1990-06-07 Sony Corporation Apparatus for decoding error correcting code
ATE50429T1 (en) * 1985-06-14 1990-02-15 Philips Nv SYSTEM FOR TRANSMITTING WORDS SECURE BY COMBINATION OF A BLOCK CODE AND A RECURRENT CODE, TRANSMITTER DEVICE FOR USE IN SUCH SYSTEM, AND RECEIVER DEVICE FOR USE IN SUCH SYSTEM.
JPS6214305A (en) * 1985-07-12 1987-01-22 Fujitsu Ltd Writing error processing method for magnetic tape device
JP2759937B2 (en) * 1986-01-30 1998-05-28 キヤノン株式会社 Image information data recording device
JP2526875B2 (en) * 1986-11-05 1996-08-21 ソニー株式会社 Digital information recorder
US4761782A (en) * 1987-03-09 1988-08-02 Eastman Kodak Company Error correction of digital image data by means of image redundancy
US4876616A (en) * 1987-07-22 1989-10-24 Sony Corporation Apparatus for reproducing a digital signal
US4998252A (en) * 1987-08-06 1991-03-05 Sony Corporation Method and apparatus for transmitting digital data
JPH0773363B2 (en) * 1988-01-21 1995-08-02 パイオニア株式会社 Signal reproduction processor
US4937741A (en) * 1988-04-28 1990-06-26 The Charles Stark Draper Laboratory, Inc. Synchronization of fault-tolerant parallel processing systems
JPH0345019A (en) * 1989-07-13 1991-02-26 Canon Inc Syndrome calculation circuit
JPH0447569A (en) * 1990-06-15 1992-02-17 Canon Inc Digital recording and reproducing device
JPH07105638A (en) * 1993-10-05 1995-04-21 Matsushita Electric Ind Co Ltd Picture data recording and reproducing device
JP3441589B2 (en) * 1996-02-29 2003-09-02 シャープ株式会社 Synchronous detection and demodulation circuit
US6170073B1 (en) 1996-03-29 2001-01-02 Nokia Mobile Phones (Uk) Limited Method and apparatus for error detection in digital communications
GB2311699B (en) * 1996-03-29 2000-09-20 Nokia Mobile Phones Ltd Method and apparatus for digital communication
KR100469427B1 (en) * 2002-06-24 2005-02-02 엘지전자 주식회사 Video reproducing method for mobile communication system
JP2004062950A (en) * 2002-07-25 2004-02-26 Sony Corp Device and method for processing data, and program

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4146099A (en) * 1976-08-17 1979-03-27 Christopher Scientific Company Signal recording method and apparatus
US4215335A (en) * 1977-12-28 1980-07-29 Sony Corporation Digital signal transmission method
JPS5556744A (en) * 1978-10-23 1980-04-25 Sony Corp Pcm signal transmission device
FR2440133A1 (en) * 1978-10-25 1980-05-23 Thomson Brandt DIGITAL CODING METHOD FOR THE RECORDING OF SOUND CHANNELS WITH A TELEVISION SIGNAL AND DEVICE CARRYING OUT THIS METHOD
US4292684A (en) * 1978-11-01 1981-09-29 Minnesota Mining And Manufacturing Company Format for digital tape recorder
JPS5661873A (en) * 1979-10-25 1981-05-27 Sony Corp Digital video signal processor
US4321704A (en) * 1980-02-01 1982-03-23 Ampex Corporation Parity checking circuitry for use in multi-bit cell PCM recording and reproducing apparatus
AU544259B2 (en) * 1980-04-16 1985-05-23 Sony Corporation Detecting + correcting errors in digital video signals
JPS5730108A (en) * 1980-07-28 1982-02-18 Sony Corp Digital signal processing circuit
JPS5760576A (en) * 1980-09-26 1982-04-12 Hitachi Ltd Pcm recorder
JPS5773577A (en) * 1980-10-27 1982-05-08 Sony Corp Control signal fetch circuit
JPS57207958A (en) * 1981-06-17 1982-12-20 Hitachi Ltd Data correcting device
JPS58179913A (en) * 1982-04-15 1983-10-21 Sony Corp Recorder of audio signal

Also Published As

Publication number Publication date
AU3269684A (en) 1985-03-14
AU573618B2 (en) 1988-06-16
US4680763A (en) 1987-07-14
ATE41545T1 (en) 1989-04-15
JPS6057574A (en) 1985-04-03
EP0137721A1 (en) 1985-04-17
EP0137721B1 (en) 1989-03-15
CA1252885A (en) 1989-04-18

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee